I don't mind it but I think it's very odd and out of place if there are "hybrids" that are not possible. aka hyena lion cubs, which is impossible by nature.. That's my personal opinion, I don't like it xP
really, the only thing that bothers me is when impossible hybrids happen. kinda takes me out of it when a lion/hyena or cheetah/leopard cub shows up. at the same time, though, i'm not scrooge enough to complain if the design is nice, either. :3
unlikely, actually. it's not just because they're both cats, it has to do with a lot more than that. cheetahs are an entirely different genus than leopards and aren't even really "big cats" like leopards and lions.